Answer / Sooraj Choudhary

The ideal replication factor in Hadoop can vary depending on various factors like data consistency, data availability, and hardware resources. A common choice is three (3) for a single replica on a DataNode along with two (2) backup replicas, but it can be adjusted according to the specific use case.

Explain the features of pseudo mode?

1 Answers  

---

Is hadoop a database?

1 Answers  

---

Is hadoop a memory?

1 Answers  

---

What is the relation between job and task in hadoop?

1 Answers  

---

What are the problems with Hadoop 1.0?

1 Answers  

---

Explain a simple Map/Reduce problem.

1 Answers   Capital One,

---

What are the steps to submit a Hadoop job?

1 Answers  

---

Explain the use of tasktracker in the hadoop cluster?

1 Answers  

---

What is Writable & WritableComparable interface?

1 Answers  

---

What is structured data?

1 Answers  

---

What are the functionalities of jobtracker?

1 Answers  

---

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1 Answers  

---